From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jean Delvare Subject: Re: Driver for pca9541 bus master selector Date: Tue, 28 Sep 2010 17:16:07 +0200 Message-ID: <20100928171607.395f7736@endymion.delvare> References: <20100928143302.GA7593@ericsson.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20100928143302.GA7593-IzeFyvvaP7pWk0Htik3J/w@public.gmane.org> Sender: linux-i2c-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Guenter Roeck Cc: linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Michael Lawnick , Rodolfo Giometti List-Id: linux-i2c@vger.kernel.org Hi Guenter, On Tue, 28 Sep 2010 07:33:02 -0700, Guenter Roeck wrote: > I am in the process of writing a driver for the pca9541 bus master selector. > I using the i2c multiplexer framework, which fits the requirements quite nicely. > > If anyone happens to know about an existing driver for this chip, please let me know. > I would love to get some input for the arbitration mechanism needed to determine > if and when to switch bus ownership from one master to the other. See drivers/i2c/muxes/pca954x.c in 2.6.36-rc2 and later. -- Jean Delvare